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Chapter 4 Section 5

Chapter 4 Section 5 . Scatter plots & Trend Lines. Scatter plot. Is a graph with points plotted to show a possible relationship between two sets of data. A scatter plot is an effective way to display some types of data. Graphing a Scatter plot . Put in your notes

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Chapter 4 Section 5

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  1. Chapter 4 Section 5 Scatter plots & Trend Lines

  2. Scatter plot • Is a graph with points plotted to show a possible relationship between two sets of data. • A scatter plot is an effective way to display some types of data.

  3. Graphing a Scatter plot • Put in your notes • Make sure to give the graph a title • Label x & y. • Label the x & y axis • The scale for the x & y can be different scales • For example on the x-axis you could go up by 1’s and on the y-axis you could by 5’s. • Plot the ordered pairs

  4. Let’s Practice • Make a scatter plot of the following data in your notes:

  5. Scatter plot of Increase in List

  6. Try one more • Graph the Football data in your notes packet

  7. Scatter plot of Games

  8. Correlation • Describes a relationship between two data sets. A graph may show the correlation between data.

  9. Correlations

  10. Describing Correlations from Scatter plots • Describe the correlation Negative Correlation

  11. Describing Correlations from Scatter plots 2) Describe the correlation Positive Correlation

  12. Identifying Correlations • Describe the Correlations: 3) The number of empty seats in a classroom and the number of students you would expect to see. You would expect to see a negative correlation. As the number of students increases, the number of empty seats decreases.

  13. Identifying Correlations • Describe the Correlations: 4) The number of pets a person owes and the number of books that person read last year. • You would expect to see no correlation. The number of pets a person owns has nothing to do with how many books the person has read.

  14. Identifying Correlations • Describe the correlation 5) The monthly rainfall and the amount of water in a reservoir. • You would expect to see a positive correlation. As more rain falls, there is more water in the reservoir.

  15. Identifying Correlations • Describe the correlation 6) The temperature in Houston and the number of cars sold in Boston. No Correlation

  16. Identifying Correlations • Describe the correlation 7) The number of members in a family and the size of the family’s grocery bill. Positive Correlation

  17. Identifying Correlations • Describe the correlation 8) The number of times you sharpen your pencil and the length of your pencil. Negative Correlation

  18. Complete Practice 4 -5 • To be collected • Check your answer with the substitute

  19. Homework due Tuesday • Page 266: # 1-12 (To be collected tomorrow) • You will need graph paper for your homework to create the scatter plot • Core Ethical Value Typed Essay due on Thursday

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